IRCC SMSC Corporation, IRCC Datasheet - Page 7

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IRCC

Manufacturer Part Number
IRCC
Description
INFRARED COMMUNICATIONS CONTROLLER
Manufacturer
SMSC Corporation
Datasheet
DMA Channel
4-bit bus from a chip-level configuration register,
used to identify the current IrCC DMA channel
number. The value appears in the upper nibble
of IrCC Register Block Three, Address Four.
Tx Polarity
Typically part of a 16550A Serial Port Option
Register.
Register Block One, Address Zero.
Rx Polarity
Typically part of a 16550A Serial Port Option
Register.
Register Block One, Address Zero.
Half Duplex
Typically part of a 16550A Serial Port Option
Register.
Register Block One, Address Zero.
DMA Channel
Half Duplex
IR Location
Rx Polarity
Tx Polarity
The value also appears in IrCC
The value also appears in IrCC
The value also appears in IrCC
IR Mode
IRQ Level
NAME
NAME
SIZE (BITS)
SIZE (BITS)
Table 8 - Legacy Chip-Level Controls
4
4
1
1
1
3
2
TYPE
Input
Input
Input
Input
Input
TYPE
Input
Input
7
IRQ Level
4-bit bus from a chip-level configuration register,
used to identify the current IrCC IRQ level. The
value appears in the lower nibble of IrCC
Register Block Three, Address Four.
IR Mode
Typically part of a 16550A Serial Port Option
Register. These values are also part of the IrCC
Block Control bits 3-5, Register Block One,
Address Zero.
IR Location
Typically part of a 16550A Serial Port IR Option
Register. These values are the IrCC Output Mux
bits, Register Block One, Address One.
NOTE: These legacy controls are uniformly
updated in the IrCC and the Top-level Device
Configuration Registers only when either set of
registers are explicitly written using IOW or
following a device-level POR.
resets will not affect the legacy bits.
16550A UART Half Duplex Control
IR Option Register Location Bits
Output Mux. Transmit Polarity
Output Mux. Receive Polarity
ISA DMA Channel Number
IR Mode Register Bits
ISA Interrupt Level
DESCRIPTION
DESCRIPTION
IrCC software

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